摘要: |
支架作为天线的结构载体,是满足天线特殊安装空间,特定指向角度的重要部件。针对日益严苛的设计要求,传统制造方法难以满足某型号天线兼顾轻量化、强度和刚度的要求。基于以上现状,提出一种基于增材制造的天线支架一体式轻量化结构设计方案。借助Inspire结构优化软件仿真优化得到了新型天线支架一体式轻量化三维模型,同时强度、刚度校核表明新型天线支架满足性能指标要求。与传统经验式设计方案相比,采用拓扑优化技术得到的新型一体式天线支架的材料分布更加合理,且用量更少,减重达到40%。同时,原有的设计制造周期从6个月缩短到1个月,极大地缩短了产品的研制周期。新型设计方案以仿真来驱动设计,形成高效的结构设计方案,突破天线产品支架结构设计技术瓶颈,实现天线单机性能的全方位升级。 |
关键词: 拓扑优化;天线支架;结构设计;有限元分析 |
基金项目:上海航天先进技术联合研究基金(USCAST2022-40) |
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Lightweight Design and Simulation of A New Antenna Bracket |
Lai Guoquan
Zhang Shuai
Liu Shuangrong
Yi Wentao
Liu Jiachen
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Shanghai Aerospace Electronic Technology Institute, Shanghai 201109
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Abstract: |
As the structural carrier of the antenna, the bracket is an important component that meets the special installation space and specific pointing angle of the antenna. In response to the increasingly stringent design requirements put forward by the overall unit, traditional manufacturing methods are difficult to meet the requirements of a certain type of antenna for both lightweight and strength and stiffness. Based on the above situation, a lightweight integrated structural design scheme for antenna brackets based on additive manufacturing has been proposed. The integrated lightweight 3D model of the new antenna bracket was obtained through simulation and optimization using the Inspire structural optimization software. The strength and stiffness checks showed that the new antenna bracket met the performance requirements. Compared with the traditional empirical design scheme, the material distribution of the new integrated antenna bracket obtained by topology optimization technology is more reasonable, and the consumption is less, and the weight reduction is up to 40%. Meanwhile, the original design and manufacturing cycle was shortened from 6 months to 1 month, greatly shortening the product development cycle. The new design scheme uses simulation to drive design, forming an efficient structural design scheme, breaking through the technical bottleneck of antenna product support structure design, and achieving comprehensive upgrading of antenna single machine performance. |
Key words: topology optimization;antenna bracket;structural design;finite element analysis |